Construction of doors.



w. L. EVANS, JR. 'GONSTEUOTION 0F DOORS. APPLICATION FILED OUT. 30,1908.

937,430. I Pat nted 099191909.

' 2 L72 WZZZWZZM I Z 35,, 4/ v WILLIAM LEWIS EVANS, JR, 0]? WASHINGTON,INDIANA.

CONSTRUCTION or noons] Speciflcation'ot Letters Patent.

Patented Oct. 19, 1909.

Application filed October 80, 1908. Serial No. 460,350.

To all whom it may concern:

Be it known that I,W1LLIAM Lnwrs EVANS, Jr., a citizen of the UnitedStates, residing at Vashington, in the county of Daviess and State ofIndiana, have invented'a new and useful Construction of Doors, of whichthe following is a specification.

This invention relates to that .class of doors known as flush b reasonof their smooth surfaces, and sometimes called sanitary for the samereason.

The object of the present invention is to provide a door of this kindhaving airspaces on the inside thereof to reduce the weight of the door,and also to obviate the necessity of gluing up a solid core, thusreducing the cost of the door.

A further object is to provide a construction which enables the partsconstituting the door to be readily assembled and glued up in oneoperation.

The invention also has for its object to provide a door constructionwhich will permit the omission or the cutting out of parts, and theinsertion of glass or wood panels.

The invention also has for its object certain other advantageous andnovel structural details, all of which will appear more fullyhereinafter.

Figure 1 is a face view of the door, partly broken away. Fig. 2 is anenlarged section on the line 2-2 of Fig. 1. Fig. 3 is a face view,partly broken away, of a door provided with a space for a panel.

Each of the form of doors shown in the drawings comprises edge strips10, forming a skeleton frame to which. are secured horizontal crossstrips 11 and the outer sheathing 12 of veneer. Between the cross stripsare placed strips 13 which-may run in any direction, but preferablyperpendicular. The edge strips 10 are rabbeted on opposite sides asindicated at 14 to receive the inner end of the cross strips 11. Thesheathing 12 is glued on the outside of the cross strips 11 and extendsover the entire surface of the door to the outer edge of the strips 10,it being also glued to said strips.

By the construction herein described air spaces. are left between thestrips 10 and 13 inclosed by the strips 11, which reduces the weight ofthe door, and also provides a space for the reception of anon-combustible ma terial if a fire-proof door is desired. Theconstruction also does away with the necessity ofgluing up a solid core,thus reducing the cost of manufacture. Glue can be applied to thedifferent pieces during the construction of the door so that they canall be put under a press and finished atone clamp ing operation.

It will be readily seen that, by reason of the air spaces and bycrossing the grain of the cross strips and the veneers, the door willhave little tendency to shrink or swell in length or breadth, and thedoor is made very strong. The strips 13 and the rabbeted edge strips 10make the door very stiff as they are all glued solidly to the crossstrips 11. The cross strips and the sheathing can be run in anydirection, but in general work it will be preferable to run the crossstrips horizontally and the sheathing veneers perpendicularly. Thestrips 11 and the strips 13 are entirely hidden by the edge strips 10,thus leaving no end wood exposed for the absorptionof moisture, whichwould have a tendency to cause swelling of the wood and softening of theglue. The construction is also such that it permits the cutting of thedoor in any manner necessary for the insertion of panels of any shapeorkind. The strips 10 may be made of one or more pieces and they may beplaced only at the two vertical edges of the door, but preferably theyalso extend across the top and bottom edges, thus entirely inclosing thestrips 11 and 13, for the reason already described.

In Fig. 3 is shown a door provided-with a hole for the insertion of apanel. In order to facilitate the shaping of the hole, and the fasteningin of the panel and also to stiffen the door, the strips 13 are shapedand arranged to conform to the outline of the panel, and these stripsare glued in between the strips 11 so that when the latter strips andthe sheathing 12 are trimmed to accommodate the panel, the edges of saidstrips 11 and 13 and the sheating 12 will be flush or even with eachother. This arrangement of strips 11 around the panel also closes allholes between the other strips 13 that would otherwise be seen beforeputtin in the panel and the arrangement also acilitates the fastening inof the-panel by furnishing in the band formed by the strips 13 aroundthe panel, a fastening for the panel or the molding holding the same in.

In the air space of each of the form of doors herein described, aremounted blocks 21 in or on which the lock is to be secured. These blocksmay be built in at either or both sides of the door.

The doors can be veneered with Various kinds of wood, covered withburlap or other material, and they can be finished to match other doors,being veneered with the same kind of material.

From the foregoing it will be seen that I have provided a door which islight, strong and durable, and one which can be readily manufactured. Itis obvious that the same construction can be used in panel work, tabletops, and various kinds of woodwork, and variations in the form,proportions and minor details of construction may be resorted to withoutdeparting from the spirit or sacrificing any of the advantages of theinvention.

What I claim is:

A door comprising a skeleton frame consisting of side and end stripsrabbeted on opposlte sides, bracing strips extending perpendicularbetween the end strips, and having their outer surfaces flush with therabbets, some of said bracing strips being cut away intermediate theirends to form the outline of a panel, border strips defining the outlineof the panel, horizontal cross strips connecting the side strips, saidcross strips fitting the outer surface of the bracing stri )S and theborder strips, and a portion of said cross-strips being cut away toextend flush with the lnner edges of the border strips to conform to theoutline of the panel, and

said cross strips fitting at their ends in the rabbets of the sidestrips, and a sheathing of veneer over the cross strips and the exposedsurface of the end and side strips.

In testimony that I claim the foregoing as my own, I have hereto afiixedmy signature in the presence of two witnesses.

WILLIAM LEWIS EVANS, JR. Witnesses: Hnnvny T. TRUEBLOOD,

MAGNESS J. CARNAHAN.

